Vehicle Image Display Power Management After Shutdown
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle image display devices cannot display vehicle information after the power supply is turned off, limiting user convenience and safety in monitoring vehicle status post-parking.
Innovation Solution
A vehicle system comprising a detection unit, transmission unit, and control unit that continues to supply power and transmit vehicle information to an image display device after the power is turned off, allowing for abnormality detection and navigation guidance even when the vehicle is unattended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the power supply of the vehicle is turned off to save energy, then energy consumption is reduced, but the ability to display vehicle information is lost
Solution Approach 1:
The power supply system is segmented into two independent parts: the main vehicle power supply and a separate backup battery. The backup battery specifically powers the detection unit, transmission unit, and control unit after the main power is turned off, enabling continued vehicle information display without draining the entire vehicle's energy resources.
Solution Approach 2:
The backup battery is pre-charged before the vehicle power is turned off. This preliminary energy storage allows the system to immediately continue displaying vehicle information without interruption or delay when the main power supply is switched off.
2Use of energy by moving object
If the power supply is turned off when the vehicle is parked, then energy is conserved, but the user cannot receive abnormality notifications or navigation guidance
Solution Approach 1:
The system segments power supply functions by using the backup battery exclusively for critical monitoring functions (detection, transmission, and control units) after parking, separating these reliability-critical functions from the main vehicle power system that is turned off during parking.
Solution Approach 2:
The backup battery acts as an intermediary power source that bridges the gap between vehicle parking and user arrival. It maintains power to the detection and notification systems during this interval, ensuring reliability without requiring the main vehicle power to remain on.
3Loss of information
If the main power remains on after parking to maintain display functionality, then information availability is improved, but energy consumption increases
Solution Approach 1:
The power supply function for the display system is extracted from the main vehicle power system and assigned to a separate backup battery. This extraction allows the main power to be completely turned off during parking while the backup battery independently maintains information availability through the detection and transmission units.
Solution Approach 2:
The backup battery is designed as a low-cost, short-duration power source sufficient only for the parking interval. It provides economical energy consumption for the specific purpose of maintaining display functionality during parking without the overhead of keeping the entire vehicle power system active.
Data Source
AI summary
A vehicle includes a detection unit configured to detect a state of the vehicle, a transmission unit configured to transmit information based on a result of the detection performed by the detection unit to an image display device, and a control unit configured to change information to be transmitted to the image display device when a power supply of the vehicle has changed from an on state to an off state.